粉煤灰烘干機是煤粉經高溫燃燒后形成的一種似火山灰質混合材料。

它(ta)是(shi)燃燒(shao)煤(mei)的發(fa)電廠將煤(mei)磨成(cheng)100微米(mi)以下(xia)的煤(mei)粉(fen)，用預熱空氣(qi)噴入爐膛經(jing)燃燒(shao)形成(cheng)懸浮狀態，產生混雜有大量不燃物的高溫煙氣(qi)，經(jing)集(ji)塵裝置(zhi)捕集(ji)就得(de)到(dao)了(le)粉(fen)煤(mei)灰。粉(fen)煤(mei)灰的化(hua)(hua)學組成(cheng)與粘土質相似，主(zhu)要成(cheng)分為二氧(yang)化(hua)(hua)硅、三氧(yang)化(hua)(hua)二鋁、三氧(yang)化(hua)(hua)二鐵、氧(yang)化(hua)(hua)鈣和未燃盡(jin)碳。

工作原理

濕(shi)粉煤(mei)(mei)灰(hui)(hui)由供料(liao)(liao)(liao)裝(zhuang)置進(jin)(jin)(jin)入三層(ceng)(ceng)(ceng)滾(gun)筒(tong)(tong)(tong)的(de)(de)(de)內(nei)(nei)(nei)層(ceng)(ceng)(ceng),實(shi)現順流烘(hong)干(gan)(gan), 粉煤(mei)(mei)灰(hui)(hui)在(zai)內(nei)(nei)(nei)層(ceng)(ceng)(ceng)的(de)(de)(de)抄(chao)板(ban)下不斷抄(chao)起、散落呈螺旋行(xing)(xing)(xing)進(jin)(jin)(jin)式(shi)實(shi)現熱交換，物(wu)料(liao)(liao)(liao)移動(dong)至內(nei)(nei)(nei)層(ceng)(ceng)(ceng)的(de)(de)(de)另一端進(jin)(jin)(jin)入中(zhong)層(ceng)(ceng)(ceng)，進(jin)(jin)(jin)行(xing)(xing)(xing)逆流烘(hong)干(gan)(gan)，物(wu)料(liao)(liao)(liao)在(zai)中(zhong)層(ceng)(ceng)(ceng)不斷地被反(fan)復揚進(jin)(jin)(jin)，呈進(jin)(jin)(jin)兩(liang)步退一步的(de)(de)(de)行(xing)(xing)(xing)進(jin)(jin)(jin)方(fang)式(shi)，物(wu)料(liao)(liao)(liao)在(zai)中(zhong)層(ceng)(ceng)(ceng)既充(chong)分(fen)吸收(shou)內(nei)(nei)(nei)層(ceng)(ceng)(ceng)滾(gun)筒(tong)(tong)(tong)散發的(de)(de)(de)熱量(liang)(liang)，又(you)(you)吸收(shou)中(zhong)層(ceng)(ceng)(ceng)滾(gun)筒(tong)(tong)(tong)的(de)(de)(de)熱量(liang)(liang)，同時(shi)(shi)又(you)(you)延長(chang)了干(gan)(gan)燥(zao)時(shi)(shi)間，物(wu)料(liao)(liao)(liao)在(zai)此(ci)(ci)(ci)達到干(gan)(gan)燥(zao)狀態。物(wu)料(liao)(liao)(liao)行(xing)(xing)(xing)至中(zhong)層(ceng)(ceng)(ceng)另一端而(er)(er)落入外(wai)層(ceng)(ceng)(ceng)，物(wu)料(liao)(liao)(liao)在(zai)外(wai)層(ceng)(ceng)(ceng)滾(gun)筒(tong)(tong)(tong)內(nei)(nei)(nei)呈矩形多回路方(fang)式(shi)行(xing)(xing)(xing)進(jin)(jin)(jin)，達到干(gan)(gan)燥(zao)效(xiao)果的(de)(de)(de)物(wu)料(liao)(liao)(liao)在(zai)熱風(feng)作用下快速(su)行(xing)(xing)(xing)進(jin)(jin)(jin)排出滾(gun)筒(tong)(tong)(tong)，沒有達到干(gan)(gan)燥(zao)效(xiao)果的(de)(de)(de)濕(shi)物(wu)料(liao)(liao)(liao)因自重而(er)(er)不能(neng)快速(su)行(xing)(xing)(xing)進(jin)(jin)(jin)，物(wu)料(liao)(liao)(liao)在(zai)此(ci)(ci)(ci)矩形抄(chao)板(ban)內(nei)(nei)(nei)進(jin)(jin)(jin)行(xing)(xing)(xing)充(chong)分(fen)干(gan)(gan)燥(zao)，由此(ci)(ci)(ci)達到干(gan)(gan)燥(zao)效(xiao)果，完成干(gan)(gan)燥(zao)過程(cheng)。

設備(bei)特點

該設(she)備(bei)與其(qi)他干(gan)燥設(she)備(bei)相比，生產能力大，可(ke)連續操作； 結構簡單，操作方(fang)便；故(gu)障少，維修費用(yong)低(di)；適用(yong)范(fan)圍(wei)廣(guang)，流(liu)體(ti)阻力小，可(ke)以用(yong)它干(gan)燥顆(ke)料(liao)狀物(wu)料(liao)，對于那些附著性(xing)大的(de)物(wu)料(liao)也(ye)很有利；操作彈性(xing)大，生產上允許產品的(de)流(liu)量(liang)(liang)有較大波動范(fan)圍(wei)，不會影(ying)響(xiang)產品的(de)質量(liang)(liang)；清(qing)掃容易。